Kicker 40CWD102 CompD Series 10 inch Subwoofer Dual 2 Ohm Kicker 40CWD102 10" Dual 2-Ohm Comp-D Series Subwoofer Power Handling: 600 Watts Peak / 300 Watts RMS Woofer Composition Injection Molded Polypropylene (Impp) Woofer Surround Ribbed Poly-Foam High-Strength Spiralead Tinsel Leads